Hi
After update Hikashop there is a fail https://prnt.sc/MHVilgrf-bK5
I asked Hikashop and got this answer.
Hi,
First, these are not linked to the update.
You already had these messages before.
And these ( starting with "deprecated" ) are actually not errors. It's messages for developers to know what to change in their code to be compatible with future versions of PHP.
These must have appeared as you updated your PHP version and activated the debug / error reporting of your Joomla configuration.
So we need to work on them on our end (for the ones related to HikaShop. The ones on your first screenshot are from your template. I would recommend reporting them to your template provider so that they can work on them too).
However, you can ignore them. Just turn off the error reporting and debug settings of the Joomla configuration.